Machine for interfolding strips



MACHINE FOR INTERFOLDING STRIPS I Filed Sept. 26, 1942 26 [Q I 27 26 O iv v IN V EN TOR. F/P'DER/ K R. SLA vs.

ATTORNEYS of the mechanism.

Patented Dec. 26,1944

application September 2 This invention relates tomachines for theproduction of doubled, re-enforced strips from thin,

fiexible, tape-like, material, with particular, reference to Cellophane.1 t

1 Such strips, ,or strands, invarious colors, when braided or woven,form acceptable foundations for ornaments forwomens hats, and othermillia new uses, being;. waterproof, permanent in colori .zation, easyof application :and moderate in cost .of production. l

910 ltisaniobject of therinvention to prolvide a ,mechanism which,progressively, places a, relatively narrow lining. or re-enforcing stripof dense material, as paper, midway between the side edges of thefCellophane strip, foldsthe edges thereover. refolds the combinedstrips, supplies an adhesive, and presses the sides together to complete,cohesionj A further feature'is in the provision of means for adjustingand maintaining the paperliner strip centrally of the Cellophane strip;acon- Idition that can be visually, ascertained during progress of theoperation,the strip serving to prevent light'fromfpassing through thetranslucent 9 material infwhichlitis enclosed.

Another purpose is to provide a novel means to apply an adhesive to theinner surface of oneside tity required, so that afterseamingthe sides,no

excess adhesive appears, both edges being smooth' and uniformthroughout.

6, 1942, Serial No. mean, 4 Claims. (01454- 1) fixedupright spindles [6,11101. which reels t8,

[9 respectively, are revolvablymounted. i The reel l8carries a supplyof..Cellophanef'or likethin, pliable material, 20, tape-like, in form,

having a glossy surface, preferably waterproof, in

i any preferre'dcolor and, translucent in its nature.

The reel .l9tis supplied with a liner strip 2|, of opaque, material,such as ,paper, oflesser width than. the strip '20., of the 1 same colorand adapted to prevent penetration oflight therethrough when theproductis complete.

The mechanism is,;.however, not limitedmerely to two strands, casing andliner, asobviouslya plurality of eithermay beemploye'd.

The strip .is provided with aguide 22 ad,-

.iustably mounted on the bench |5, while a similar guide 23lis mountedin lilremanner for, the filler stripZI ffThese guides are arranged toconverge 'the .strips just before they reachtheflattened mouth or thefirstor initial, funnel "folder 24, of well knowntype, butmount'ed"floatingly on the flat face of a vertical bracket 25 secured onthe bench. A. controller'zli isformed witha raised. loop 21, open'at itsunder side, adaptedto engage over i and around the contracteddischarge'portion of,

"thefolder and by ,whichit maybe'raised, lowi only of the redoubledstrips, in the exact quan- These and other advantageous aims areaccomplished by the novel and practical construction, combination andarrangement of parts hereinafter described, and illustrated in theaccompanying drawing, constituting a graphical component i i fo1der3l,fixed rigidly to the bracket .25, to re-,

of this disclosure, and in which: i r Figure 1 is a plan view of anembodiment of the invention.

Figure 2 is a perspective view showing the folding elements in greaterdetail.

t Figure, 3 is a transverse sectional View taken on line 33v of Fig. 2,

scale. i

Figures 4, 5 and 6 are similar sectional views taken on correspondinglines of Fig. 2.

Figure '7 is a perspective view showingin detail a portion of thecombined strips 'as they are advanced through the folding, and adheringstages Figure 8 is a plan view of a piece of goods formed by braidingseveral of the strips together.

Referring to the drawing in detail, a bench,

generally designated I5, forms the foundation of the mechanism, which,as shown, comprises two drawn to an enlarged h ered, turn ed at ajslight angle an'dalso moved "lengthwise. i

This is'accomplished b reason ofa longitudinal slot 283m the controllershank, and a slot 29 in thebracket at a. right angle thereto, throughwhich passes a clamp bolt 30,- whereby to retain the controller,togetheriwith the folder, in adjusted position. i

Spaced in advance ofwthe folder 24 is a final be positioned centrally ofthe casing strip, at the initial folding, see Fig. 7, which position isat tained by proper adjustment of the ccntroller;

another feature, also accomplished by the conf f 9 trailer, is that ofspacing the folders sufficiently apart to permit a clear view of therelative positions of the casing and liner as they emerge from plane ofthe folders, has as a feeding means, a fibrous, brush-like wick 34extendingdownwardly, 1

its end engaging in a slot 35 in one of the side walls of the finalfolder, in a manner to apply an even coating of the adhesive directlyupon the inner surface of one side only, of the redoubled strip, just asit passes out.

The issuing strip enters between a pair of pressure rolls 3t, 3],relatively upper and'lower, by which the sides are closed and seamed, asat 38, in Figs. 2 and 7.

The upper roll 36 is fixed'on a shaft 39 extending transversely acrossthe bench and driven by a pulley 40, over which is trained a belt fromany convenient power source.

Alongsidethe pulley 40 is a smaller belt pulley 4|, driving a belt 42trained over a sleeve pulley 43, frictionally engaged with a cone 44fast upon a shaft 45; thus the shaft is frictionally, not positively,driven but may slip under excessive load.

The shaft 45 is mounted in bearings on the bench, parallel to the shaft39, and has fixed upon it a drum 46; another similar drum Ill is mountedin bearings 48, 49 adjustable on the bench in such manner that the axesof these drums are at aslight angle; for thepurpose of spacing thefinished stripv 38 as it is wound on the drums, after leaving the rolls36, 31, so that the adhesive may be thoroughly dry and set.

Thereafter the strip is wound on a reel 50, fixed on a shaft having apulley 52, driven by a belt 53 from a pulley 54, on the main drive shaft39.

Having thus described the invention, what is claimed as new and soughtto secure by Letters Patent, is: a

1. In a machine ,for making an interfolded strip from two stripsofductile material respectively inner and outer, comprising in combina-'tion, a funnel folderhaving an opening in one of its side wallsadjacent the outlet thereof,,,a

container for a liquid adhesive, a wick to conduct the adhesive fromsaid container through the folder wall opening'to deposit it on theinner surface of one of the upstanding sides of the outer strip prior toocclusion thereof, and apair of rolls to press the sides of the stripinto 00- herency when passed therebetween.

2. A machine for makinga compound pliable strip of uniform width andthickness, comprising reels to supply individual casing and linerstrips,

lsaid liner strip being of lesser width than the casing strip, aninitial folder to turn the side edges of said casing strip over anduponthe liner strip to partially encase-the same, adjustable means forguiding the strips to said initial folder, a final folder to completefolding the side edges of said casing strip, means to adjust saidinitial folder relative to the final folder laterally, longitudinallyand angularly, and means to supply an adhesive to one of the inner sidesurfaces of the compound strip just prior toextrusion from said finalfolder.

3. A machine for making a ductile strip having uniform sides and edges,comprising a reel carrying a cover strip, a second reel carrying a linerstrip of lesser width than the cover strip, a folder to turn the lateraledges of said cover strip over upon the liner, means to adjust the linerrelative to the cover strip, a second folder for doubling the combinedstrip and liner, said second folder having an opening in one side nearits outlet, a

wick extending through the opening, means to sup-ply said wick with anadhesive, compression rolls to squeeze the united sides of the strip,and a pair of drums over which the finished strip is wound, one of saiddrums being frictionally driven, the other loose and its axis obliquelyinclined to the driven drum whereby the combined strip is coiled inspaced convolutions under moderate tension.

4. In a machine for making a compound pli able strip of uniform widthand thickness, comprising reels to supply individual casing and linerstrips, said liner stri being of lesser width than the casing strip, aninitial folder to turn the side edges of said casing strip over and uponthe liner strip to encase the same, adjustable means for guiding thestrips to said initial folder, a final folder to complete folding theside edges of said strip, means to adjust said initial folder relativeto the final folder laterally, longitudinallyand angularly, wickmeansfor coating one only of the inner surface of the side walls of thedoubled strip just before extrusion from'said final folder, positivelydriven compression rolls to consolidate the side walls of the stripafter emergence from said final folder, a friction driven drum and a

